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<p>Louis-Philippe,</p>
<p>there's no recommendation. Each format or community within a
format may have different practices.</p>
<p>Some formats may accept some odd characters (but definitely not
'=', as key/value pairs are stored as "key=value" strings
internally), but keeping to alphanumeric + underscore is the best
way to be universally accepted.<br>
</p>
<p>That said you'd better not use several metadata keys that only
defer by case, otherwise you're going to confuse a lot of places
in GDAL as comparisons are done in a case insensitive way. I mean:
"foo" and "BAR" are fine within the same metadata. But not "foo",
"Foo" and "FOO".</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 30/01/2023 à 16:54, Rousseau
Lambert,Louis-Philippe (ECCC) a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:7681d312-ff48-a9ce-05b7-e4b41e56d2ae@ec.gc.ca">
<p>Hi everyone ! <br>
</p>
<p>I would like to know if there is a rule or a best practice for
a raster file's metadata key to be written in upper or lower
case ? <br>
</p>
<p> I read <a class="moz-txt-link-freetext"
href="https://gdal.org/user/raster_data_model.html#metadata"
moz-do-not-send="true">https://gdal.org/user/raster_data_model.html#metadata</a>
and saw that "<i>The names are required to be well behaved
tokens (no spaces, or odd characters</i><i>).</i>" but I
didn't read anything about upper vs lower cases. While I see
examples of both (upper and lower case) in different valid
files, I would like to know if a documented recommendation
exists ?<br>
</p>
<p>Thanks</p>
<p>LP<br>
</p>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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